package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.ResourceUtils;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.HandlerMapping;

import javax.servlet.http.HttpServletRequest;
import java.io.FileNotFoundException;
import java.util.List;
import java.util.stream.Collectors;

/**
 * @Author 669
 * @CreateDate 2023/2/27 16:02
 * @Version 1.0
 */
@Slf4j
@RequestMapping("/dish")
@RestController
public class DishController {

    @Autowired
    private DishService dishService;

    @Autowired
    private CategoryService categoryService;

    @Autowired
    private DishFlavorService dishFlavorService;

    /**
     * 获取全部菜信息并分页
     * @param page
     * @param pageSize
     * @return
     */
    @GetMapping("/page")
    public R<Page> getDishPage(int page, int pageSize,String name){
        //构造分页构造器
        Page<Dish> pageInfo = new Page<>(page,pageSize);
        Page<DishDto> dishDtoPage=new Page<>();
        LambdaQueryWrapper<Dish> wrapper = new LambdaQueryWrapper<>();

        //添加菜品名模糊匹配
        wrapper.like(name!=null,Dish::getName,name);

        //根据修改时间进行排序
        wrapper.orderByAsc(Dish::getUpdateTime);

        dishService.page(pageInfo,wrapper);
        log.info("获取菜信息成功");

        //查询对应的菜品类别
        //对象拷贝
        BeanUtils.copyProperties(pageInfo,dishDtoPage,"records");
        List<Dish> records = pageInfo.getRecords();
        List<DishDto> list = records.stream().map((item) -> {

            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item,dishDto);
            Long categoryId = item.getCategoryId();//分类id
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);

            if(category != null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            return dishDto;
        }).collect(Collectors.toList());
        dishDtoPage.setRecords(list);

        return R.success(dishDtoPage);
    }

    /**
     * 通过id查询菜信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<DishDto> queryDishById(@PathVariable Long id){
        log.info("查询单个菜品信息id:{}",id);
        DishDto dishDto = dishService.getByIdWithFlavor(id);
        return R.success(dishDto);
    }

    /**
     * 修改菜品信息
     * @param dishDto
     * @return
     */
    @PutMapping
    public R<String> editDish(@RequestBody DishDto dishDto){
        log.info("需要修改的菜品id为：{}",dishDto.getId());
        dishService.editDish(dishDto);
        return R.success("修改菜品成功");
    }


    /**
     * 保存菜功能
     * @param dishDto
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());

        dishService.saveWithFlavor(dishDto);

        return R.success("新增菜品成功");
    }


    /**
     * 修改菜品
     * @param
     * @return
     */
    @PostMapping("/status/{status}")
    public R<String> dishStatusByStatus(@PathVariable Integer status, Long[] ids){

        //根据id获取菜品信息
        for (int i = 0; i < ids.length; i++) {
            Dish dish = dishService.getById(ids[i]);
            //修改菜品状态
            dish.setStatus(status);
            dishService.updateById(dish);
        }
        return R.success("修改菜品状态成功！");
    }

    /**
     * 删除菜
     * @param ids
     * @return
     */
    @DeleteMapping
    public R<String> deleteDish(@RequestParam List<Long> ids){
        log.info("删除信息为id：{}",ids);
        dishService.delDish(ids);
        return R.success("删除成功");
    }


    /**
     * 根据条件查询对应的菜品数据
     * @param dish
     * @return
     */
    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish){
        //构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId() != null ,Dish::getCategoryId,dish.getCategoryId());
        //添加条件，查询状态为1（起售状态）的菜品
        queryWrapper.eq(Dish::getStatus,1);
        //添加排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);

        List<Dish> list = dishService.list(queryWrapper);

        List<DishDto> dishDtoList = list.stream().map((item) -> {
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item,dishDto);

            Long categoryId = item.getCategoryId();//分类id
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);
            if(category != null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }

            //当前菜品的id
            Long dishId = item.getId();
            LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper = new LambdaQueryWrapper<>();
            lambdaQueryWrapper.eq(DishFlavor::getDishId,dishId);
            //SQL:select * from dish_flavor where dish_id = ?
            List<DishFlavor> dishFlavorList = dishFlavorService.list(lambdaQueryWrapper);
            dishDto.setFlavors(dishFlavorList);

            return dishDto;
        }).collect(Collectors.toList());

        return R.success(dishDtoList);
    }

}
